Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6465643 | Aminophosphonium compounds | Berthold Schiemenz, Ralf Pfirmann | 2002-10-15 |
| 6407029 | Mixtures comprising tetrakis(pyrrolidino/piperdino)phosphonium salts | Berthold Schiemenz, Ralf Pfirmann, Andreas Beck, Walter Hahn | 2002-06-18 |